From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from metis.ext.pengutronix.de ([2001:67c:670:201:290:27ff:fe1d:cc33]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1gXoHo-00005u-Jt for barebox@lists.infradead.org; Fri, 14 Dec 2018 14:17:56 +0000 From: Sascha Hauer Date: Fri, 14 Dec 2018 15:17:21 +0100 Message-Id: <20181214141730.26181-15-s.hauer@pengutronix.de> In-Reply-To: <20181214141730.26181-1-s.hauer@pengutronix.de> References: <20181214141730.26181-1-s.hauer@pengutronix.de> MIME-Version: 1.0 List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "barebox" Errors-To: barebox-bounces+u.kleine-koenig=pengutronix.de@lists.infradead.org Subject: [PATCH 14/23] ARM: omap: dmtimer: Turn into a driver To: Barebox List Turn OMAP dmtimer into a driver and move to drivers/clocksource. Signed-off-by: Sascha Hauer --- arch/arm/mach-omap/Kconfig | 5 +- arch/arm/mach-omap/Makefile | 1 - arch/arm/mach-omap/am33xx_generic.c | 5 +- drivers/clocksource/Kconfig | 3 ++ drivers/clocksource/Makefile | 1 + .../clocksource/timer-ti-dm.c | 47 ++++++++++++++----- 6 files changed, 44 insertions(+), 18 deletions(-) rename arch/arm/mach-omap/dmtimer.c => drivers/clocksource/timer-ti-dm.c (72%) diff --git a/arch/arm/mach-omap/Kconfig b/arch/arm/mach-omap/Kconfig index c451cf0d47..5ab01439f0 100644 --- a/arch/arm/mach-omap/Kconfig +++ b/arch/arm/mach-omap/Kconfig @@ -43,7 +43,7 @@ config ARCH_AM33XX select CPU_V7 select GENERIC_GPIO select OFTREE - select OMAP_CLOCK_SOURCE_DMTIMER + select CLOCKSOURCE_TI_DM select ARM_USE_COMPRESSED_DTB help Say Y here if you are using Texas Instrument's AM33xx based platform @@ -52,9 +52,6 @@ config ARCH_AM33XX config OMAP_CLOCK_SOURCE_S32K bool -config OMAP_CLOCK_SOURCE_DMTIMER - bool - config OMAP_GPMC prompt "Support for GPMC configuration" bool diff --git a/arch/arm/mach-omap/Makefile b/arch/arm/mach-omap/Makefile index a84e94ed7d..4ce8e10587 100644 --- a/arch/arm/mach-omap/Makefile +++ b/arch/arm/mach-omap/Makefile @@ -18,7 +18,6 @@ obj-$(CONFIG_ARCH_OMAP) += syslib.o omap_devices.o omap_generic.o omap_fb.o pbl-$(CONFIG_ARCH_OMAP) += syslib.o obj-$(CONFIG_OMAP_CLOCK_SOURCE_S32K) += s32k_clksource.o -obj-$(CONFIG_OMAP_CLOCK_SOURCE_DMTIMER) += dmtimer.o obj-$(CONFIG_ARCH_OMAP3) += omap3_generic.o auxcr.o pbl-$(CONFIG_ARCH_OMAP3) += omap3_generic.o auxcr.o obj-$(CONFIG_ARCH_OMAP4) += omap4_generic.o omap4_clock.o diff --git a/arch/arm/mach-omap/am33xx_generic.c b/arch/arm/mach-omap/am33xx_generic.c index 513746248e..c446431537 100644 --- a/arch/arm/mach-omap/am33xx_generic.c +++ b/arch/arm/mach-omap/am33xx_generic.c @@ -256,7 +256,10 @@ int am33xx_init(void) int am33xx_devices_init(void) { - return am33xx_gpio_init(); + am33xx_gpio_init(); + add_generic_device("omap-dmtimer", 0, NULL, AM33XX_DMTIMER2_BASE, 0x400, + IORESOURCE_MEM, NULL); + return 0; } /* UART Defines */ diff --git a/drivers/clocksource/Kconfig b/drivers/clocksource/Kconfig index 337a7a2e13..2228d44bde 100644 --- a/drivers/clocksource/Kconfig +++ b/drivers/clocksource/Kconfig @@ -88,4 +88,7 @@ config CLOCKSOURCE_DW_APB_TIMER help Enables the support for the dw_apb timer. +config CLOCKSOURCE_TI_DM + bool + endmenu diff --git a/drivers/clocksource/Makefile b/drivers/clocksource/Makefile index ab78f0700d..3b154cbc2a 100644 --- a/drivers/clocksource/Makefile +++ b/drivers/clocksource/Makefile @@ -15,3 +15,4 @@ obj-$(CONFIG_CLOCKSOURCE_ARMV8_TIMER) += armv8-timer.o obj-$(CONFIG_CLOCKSOURCE_ARM_GLOBAL_TIMER) += arm_global_timer.o obj-$(CONFIG_CLOCKSOURCE_IMX_GPT) += timer-imx-gpt.o obj-$(CONFIG_CLOCKSOURCE_DW_APB_TIMER) += dw_apb_timer.o +obj-$(CONFIG_CLOCKSOURCE_TI_DM) += timer-ti-dm.o \ No newline at end of file diff --git a/arch/arm/mach-omap/dmtimer.c b/drivers/clocksource/timer-ti-dm.c similarity index 72% rename from arch/arm/mach-omap/dmtimer.c rename to drivers/clocksource/timer-ti-dm.c index e223b8cc8f..635b860cf9 100644 --- a/arch/arm/mach-omap/dmtimer.c +++ b/drivers/clocksource/timer-ti-dm.c @@ -27,6 +27,7 @@ * */ +#include #include #include #include @@ -55,7 +56,7 @@ #define TSICR 0x54 #define TCAR2 0x58 -static void *base = (void *)AM33XX_DMTIMER2_BASE; +static void *base; /** * @brief Provide a simple counter read @@ -73,17 +74,20 @@ static struct clocksource dmtimer_cs = { .shift = 10, }; -/** - * @brief Initialize the Clock - * - * Enable dmtimer. - * - * @return result of @ref init_clock - */ -static int dmtimer_init(void) +static int omap_dmtimer_probe(struct device_d *dev) { + struct resource *iores; u64 clk_speed; + /* one timer is enough */ + if (base) + return 0; + + iores = dev_request_mem_resource(dev, 0); + if (IS_ERR(iores)) + return PTR_ERR(iores); + base = IOMEM(iores->start); + clk_speed = am33xx_get_osc_clock(); clk_speed *= 1000; dmtimer_cs.mult = clocksource_hz2mult(clk_speed, dmtimer_cs.shift); @@ -91,8 +95,27 @@ static int dmtimer_init(void) /* Enable counter */ writel(0x3, base + TCLR); - return init_clock(&dmtimer_cs); + init_clock(&dmtimer_cs); + + return 0; } -/* Run me at boot time */ -core_initcall(dmtimer_init); +static __maybe_unused struct of_device_id omap_dmtimer_dt_ids[] = { + { + .compatible = "ti,am335x-timer", + }, { + /* sentinel */ + } +}; + +static struct driver_d omap_dmtimer_driver = { + .name = "omap-dmtimer", + .probe = omap_dmtimer_probe, + .of_compatible = DRV_OF_COMPAT(omap_dmtimer_dt_ids), +}; + +static int omap_dmtimer_init(void) +{ + return platform_driver_register(&omap_dmtimer_driver); +} +postcore_initcall(omap_dmtimer_init); -- 2.19.1 _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox